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MTRAG-UN: A Benchmark for Open Challenges in Multi-Turn RAG Conversations

arXiv:2602.23184v1 Announce Type: new Abstract: We present MTRAG-UN, a benchmark for exploring open challenges in multi-turn retrieval augmented generation, a popular use of large language models. We release a benchmark of 666 tasks containing over 2,800 conversation turns across 6 domains with accompanying corpora. Our experiments show that retrieval and generation models continue to struggle on conversations with UNanswerable, UNderspecified, and NONstandalone questions and UNclear responses. Our benchmark is available at https://github.com/IBM/mt-rag-benchmark

arXiv:2602.23184v1 Announce Type: new Abstract: We present MTRAG-UN, a benchmark for exploring open challenges in multi-turn retrieval augmented generation, a popular use of large language models. We release a benchmark of 666 tasks containing over 2,800 conversation turns across 6 domains with accompanying corpora. Our experiments show that retrieval and generation models continue to struggle on conversations with UNanswerable, UNderspecified, and NONstandalone questions and UNclear responses. Our benchmark is available at https://github.com/IBM/mt-rag-benchmark

Executive Summary

This article presents MTRAG-UN, a benchmark for multi-turn retrieval augmented generation (RAG) conversations, which highlights open challenges in the use of large language models. The benchmark comprises 666 tasks with over 2,800 conversation turns across six domains, revealing struggles with unanswered, underspecified, non-standalone, and unclear responses. The study showcases the need for improved RAG models to address these complexities, thus advancing the field of conversational AI. The benchmark's availability on GitHub facilitates further research and development. This study's findings and benchmark will significantly impact the development of more effective and robust conversational AI systems.

Key Points

  • MTRAG-UN is a benchmark for open challenges in multi-turn RAG conversations.
  • The benchmark comprises 666 tasks with over 2,800 conversation turns across six domains.
  • RAG models struggle with unanswered, underspecified, non-standalone, and unclear responses.

Merits

Strength in addressing open challenges

MTRAG-UN provides a comprehensive benchmark for identifying and addressing open challenges in multi-turn RAG conversations, advancing the field of conversational AI.

Availability of benchmark on GitHub

The benchmark's availability on GitHub facilitates further research and development, enabling the community to build upon this work.

Demerits

Limited scope in current domains

The benchmark currently focuses on six domains, which might not encompass the diverse range of real-world conversational scenarios, limiting its generalizability.

Data quality and annotation issues

The quality and accuracy of the benchmark data, as well as the annotation process, may impact the reliability and validity of the findings and the benchmark's usability.

Expert Commentary

The article presents a significant contribution to the field of conversational AI by introducing MTRAG-UN, a comprehensive benchmark for multi-turn RAG conversations. The study's findings and the benchmark's availability on GitHub will facilitate further research and development, ultimately leading to more effective and robust conversational AI systems. However, the limited scope of the current domains and potential data quality issues may impact the benchmark's generalizability and usability. Nonetheless, the study's implications for both practical and policy considerations are substantial, underscoring the need for continued advancements in conversational AI.

Recommendations

  • Future research should prioritize the development of more advanced RAG models that can address the open challenges identified by MTRAG-UN.
  • The benchmark should be expanded to incorporate a broader range of domains and conversational scenarios to improve its generalizability and usability.

Sources